Juventus’ squad was placed on a mandatory quarantine when it was revealed that defender Daniele Rugani was tested positive for the virus.
However, Ronaldo was given the opportunity to head back to his hometown to be with his mother after she suffered stroke before Italy was put on lockdown.
Gigli has accused Ronaldo of ‘complicating’ matters as the likes of Gonzalo Higuain, Miralem Pjanic and Douglas Costa have also been released by Bianconeri to join their respective families around the world.
"Things at Juventus got complicated when Cristiano Ronaldo left," the 75-year-old told Radio Punto Nuovo.
"He said he was going to Portugal because of his mother, but now he only appears to be taking pictures by the pool.
"When the exception was made for him, things fell apart and others wanted to leave but it shouldn't have been like this.
"They all should have been quarantined."
The Italian insists he does not understand why the players were allowed to leave and believes Juventus will find it harder to compete once the season resumes.
"Criticizing now is easy, but from the outside I don't know why players wanted to leave Italy.”
"When they return it'll be more difficult to get back in shape because they'll have to stay in quarantine for 14 days."